package com.pray.praymall.cart.vo;

import java.math.BigDecimal;
import java.util.List;

/**
 * 购物车
 * 需要计算的属性，必须重写它的get方法，保证每次获取属性都会重新计算
 *
 * @author 魂悸魄
 * @date 2020/9/23 21:40
 */
public class CartVo {
    private List<CartItemVo> items;
    /**
     * 商品数量
     */
    private Integer countNum;

    /**
     * 商品类型数量
     */
    private Integer countType;

    /**
     * 商品总价
     */
    private BigDecimal totalAmount;

    /**
     * 减免价格
     */
    private BigDecimal reduce = new BigDecimal("0.00");

    public List<CartItemVo> getItems() {
        return items;
    }

    public void setItems(List<CartItemVo> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count = 0;
        if (items != null && items.size() > 0) {
            for (CartItemVo item : items) {
                count += item.getCount();
            }
        }
        return count;
    }

    public Integer getCountType() {
        return items == null ? 0 : items.size();
    }

    public BigDecimal getTotalAmount() {
        BigDecimal amount = new BigDecimal(0);
        // 1、计算购物项总价
        if (items != null && items.size() > 0) {
            for (CartItemVo item : items) {
                // 选中的商品才需要计算价格
                if (item.getCheck()) {
                    amount = amount.add(item.getTotalPrice());
                }
            }
        }
        // 2、减去优惠总价
        amount = amount.subtract(getReduce());
        return amount;
    }

    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
